Which of the Following Is an Example of a Market

Multiple Choice

Which of the following is an example of a market failure caused by the existence of a public good?

A) A levee is not built because no one wants to pay for it, even though everyone agrees that it is important.
B) We send a chimpanzee to space. You think it would be better if we send a lemur.
C) We spend $300 billion for national defense. You think it is too much.
D) McDonald's is your favorite restaurant. Other people think the food they serve is unappealing.